.div-contact-info {
        display: flex;
        flex-wrap: wrap; /* 允许子元素换行 */
        justify-content: space-between;
        padding: 20px;
        background-color: #333;
        color: #fff;
        max-width:100%;
        }
        
        .div-contact-info > div {
        flex: 1;
        max-width: 100%;
        margin: 0 1px; /* 添加间距以分隔每个column */
        }
        
        .div-contact-info h4 {
        text-align: left;
        }
        
        .div-contact-info a {
        display: block;
        text-align: left; /* 左对齐 */
        margin-top: 10px; /* 添加顶部间距 */
        color: #fff; /* 设置为白色字体 */
        }
        
        /* 响应式设计 */
        @media screen and (max-width: 768px) {
        .div-contact-info > div {
        flex: 0 0 100%; /* 每个column占据整个宽度 */
        margin: 10px 0; /* 更改间距 */
        }
        }
        
        
        .subscribe-btn {
        display: inline-block;
        padding: 10px 20px;
        background-color: #4CAF50;
        color: white;
        text-align: center;
        text-decoration: none;
        border-radius: 5px;
        border: none;
        cursor: pointer;
        transition: background-color 0.3s;
        margin:10px;
        }
        
        .subscribe-btn:hover {
        background-color: #45a049;
        }
        
        
        
        
        
        
        
        
        .banner-container {
        display: flex;
        justify-content: space-around;
        align-items: center;
        background-color: rgb(33, 33, 33);
        padding: 20px;
        }
        
        .banner-box {
        margin-bottom: 30px;
        margin-left: 20px;
        margin-right: 20px;
        min-width: 100px;
        border: 2px solid white; /* 添加边框样式 */
        border-radius: 30px;
        min-height: 100px;
        background-color: rgb(3, 3, 3) /* 将背景色设置为透明 */
        
        display: flex;
        justify-content: center;
        align-items: center;
        color: white; /* 文字颜色设置为白色 */
        font-weight: bold;
        font-size: 24px;
        font-family: Arial, sans-serif;
        line-height: 1.5;
        padding: 10px;
        box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
        flex: 1;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7); /* 添加文字阴影以突出显示 */
        }
        
        /* Responsive design */
        @media (max-width: 768px) {
        .banner-container {
        flex-direction: column;
        
        }
        
        .banner-box {
        margin-bottom: 10px;
        margin-left: 0;
        margin-right: 0;
        }
        }
        
        
        /* 右下角按钮。 */
        
        #purchase-link-div-1 {
        position: relative;
        }
        #sticky-purchase-button {
        position: fixed;
        bottom: 20px;
        right: 20px;
        display: none;
        /* Apply the styles of #purchaseButton1 to the sticky button */
        appearance: button;
        background-color: #1899D6;
        border: solid transparent;
        border-radius: 16px;
        border-width: 0 0 4px;
        box-sizing: border-box;
        color: #FFFFFF;
        cursor: pointer;
        display: inline-block;
        font-size: 15px;
        font-weight: 700;
        letter-spacing: .8px;
        line-height: 20px;
        margin: 0;
        outline: none;
        overflow: visible;
        padding: 13px 19px;
        text-align: center;
        text-transform: uppercase;
        touch-action: manipulation;
        transform: translateZ(0);
        transition: filter .2s;
        user-select: none;
        -webkit-user-select: none;
        vertical-align: middle;
        white-space: nowrap;
        }
        #sticky-purchase-button:after {
        background-clip: padding-box;
        background-color: #1CB0F6;
        border: solid transparent;
        border-radius: 16px;
        border-width: 0 0 4px;
        bottom: -4px;
        content: "";
        left: 0;
        position: absolute;
        right: 0;
        top: 0;
        z-index: -1;
        }
        #sticky-purchase-button:focus {
        user-select: auto;
        }
        #sticky-purchase-button:hover:not(:disabled) {
        filter: brightness(1.1);
        }
        #sticky-purchase-button:disabled {
        cursor: auto;
        }
        #sticky-purchase-button:active:after {
        border-width: 0 0 0px;
        }
        #sticky-purchase-button:active {
        padding-bottom: 10px;
        }
        
        #notification {
        display: none;
        font-size: 18px;
        /* background-color: white; 设置通知条的背景颜色 */
        background-color: purple !important;
        color: black; /* 设置文字颜色为白色 */
        padding: 30px; /* 设置内边距 */
        text-align: center; /* 文字居中 */
        position: fixed; /* 固定在页面顶部 */
        top: 0; /* 距离页面顶部0像素 */
        left: 0; /* 距离页面左侧0像素 */
        width: 100%; /* 宽度100% */
        margin: 0px;
        z-index: 9999; /* 确保通知条显示在其他元素之上 */
        }
        
        
        /* 一键调节亮度的css。 */
        
        .light-mode {
        background-color: #fff; /* 切换到亮色模式时的背景颜色 */
        color: #000; /* 切换到亮色模式时的文字颜色 */
        }
        
        .dark-mode {
        background-color: #000; /* 切换到暗色模式时的背景颜色 */
        color: #fff; /* 切换到暗色模式时的文字颜色 */
        }
        
        .white-icon {
        color: white;
        position: fixed;
        top: 20px; /* 距离顶部的距离 */
        right: 20px; /* 距离右侧的距离 */
        z-index: 9999; /* 控制按钮的层叠顺序 */
        }
        
        /* 举报链接的css。 */
        #report-link {
        margin-top: 10px; /* 设置上方距离为 20 像素 */
        display: block; /* 让超链接元素作为块级元素显示，以便设置上下间距 */
        color:#333
        }
        
        
        
        /* 聊天按钮的css */
        #contactButton {
            position: fixed;
                      bottom: 100px;
                      right: 20px;
                      background-color:   whitesmoke;
                      color: black;
                      padding: 15px 15px;
                      font-size: 15px;
                      border: none;
                      border-radius: 90%;
                      cursor: pointer;
                      width:100px;
                  }
                  
                  #contactButton:hover {
                      background-color:   white;
                  }
                  
                  #contactFormContainer {
                      display: none;
                      position: fixed;
                      bottom: 70px;
                      right: 20px;
                      width: 250px; /* 修改为较小的数值 */
                      background-color: black;
                      border: 1px solid #ccc;
                      padding: 20px;
                      text-align: left;
          }
          #contactButton.new-message {
              animation: blink 1.5s infinite;
          }
          
        /* 回到顶部的css。 */
          #scrollToTop {
            display: none;
            position: fixed;
            bottom: 200px;
            right: 20px;
            z-index: 99;
            font-size: 18px;
            cursor: pointer;
            background-color: black;
            color: #fff;
            border: none;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            text-align: center;
            line-height: 40px;
        }
        #scrollToTop:hover {
            background-color: #0056b3;
        }
        
        /* 使产品细节里面的图片宽度100%高度auto。 */
        #product-details img {
            width: 100%; /* 宽度占满父容器 */
            height: auto; /* 高度自适应 */
        }

        h1 a {
            color: purple;          /* 设置超链接文本颜色为白色 */
            text-decoration: none; /* 去掉超链接的下划线 */
        }
        
        body{
            /* background-color: black;
            color:white; */
            text-align: center;
        }
        
        #section2 {
                    font-family: 'Arial', sans-serif; /* 使用Arial字体 */
                    background-color: #000; /* 设置背景颜色 */
                    margin: 0;
                    padding: 0;
                    text-decoration: none;
                    text-align: left;
                    color: white;
                    background-color: transparent;
                    display: inline-block; /* 或者可以使用 block，具体根据布局需求选择 */
                    padding: 8px 15px; /* 添加内边距 */
                    border-radius: 5px;
                    transition: background-color 0.3s ease; /* 添加过渡效果 */
                }
        
               
        
                #section2 a {
                    background-color: #000; /* 设置背景颜色 */
                    text-decoration: none;
                    color: white;
                    font-size: 14px; /* 增加字号 */
                    font-weight: bold; /* 加粗 */
                    border: 2px solid white;
                    padding: 8px 15px; /* 添加内边距 */
                    border-radius: 5px;
                    transition: background-color 0.3s ease; /* 添加过渡效果 */
                }
        
                #section2 a:hover {
                    text-decoration: underline;
                }
        
                #section1{
        height:100vh;
                }